Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove

Oktafiani, Fitri; Chen, Jun-Quan; Lee, Po-Tsung

doi:10.1039/d2na00670g

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Nanoscale Adv.

2023

DOI: 10.1039/d2na00670g

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Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove

Fitri Oktafiani

Jun-Quan Chen

Po-Tsung Lee

Abstract: Recent development of particle manipulation has led to high demand for dynamic optical tweezers structures. However, confining and rotating single microparticle in the far-field region with uniform potential distribution remains...

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2023

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Cited by 2 publications

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Directionally duplexed all-dielectric metalens for multifunctional structured light generation

Zhu¹,

Sun²,

Dong³

2023

Opt. Lett.

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Directionally duplexed metalenses manipulated by the geometric phase of a silicon nano-bar are theoretically designed to generate multifunctional structured light. It is numerically demonstrated that incident light with different linear and circular polarization states, along forward and backward propagation directions, can be differentially converted into multiple focusing structured beams of arbitrary topological charges, either of vector light with azimuthally variant polarizations or of vortex light with helical phases. Due to the all-silicon and nonresonant metastructural design, the resultant high working efficiencies of our proposed metalens are promising for applications such as optical communication, nanoparticle manipulation, and other direction-duplexed multifunctional optical meta-devices.

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Directionally duplexed all-dielectric metalens for multifunctional structured light generation

Zhu¹,

Sun²,

Dong³

2023

Opt. Lett.

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All-optically controlled holographic plasmonic vortex array for multiple metallic particles manipulation

Ju,

Ma,

Zhang

et al. 2023

Opt. Lett.

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Due to the sub-diffraction-limited size and giant field enhancement, plasmonic tweezers have a natural advantage in trapping metallic particles. However, the strict excitation condition makes it difficult to generate an arbitrary plasmonic field in a controllable manner, thus narrowing its practical applications. Here, we propose an all-optical plasmonic field shaping method based on a digital holographic algorithm and generate plasmonic vortex arrays with controllable spot numbers, spatial location, and topological charge. Our experimental results demonstrate that multiple gold particles can be stably trapped and synchronously rotated in the vortex arrays, and the particles’ kinestate can be dynamically switched. The proposed holographic plasmonic vortex tweezers are suitable for a broadband particle trapping, and this method can be generalized to other surface electromagnetic waves like Bloch surface wave.

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Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove

Abstract: Recent development of particle manipulation has led to high demand for dynamic optical tweezers structures. However, confining and rotating single microparticle in the far-field region with uniform potential distribution remains...

Cited by 2 publications

References 47 publications

Directionally duplexed all-dielectric metalens for multifunctional structured light generation

Directionally duplexed all-dielectric metalens for multifunctional structured light generation

All-optically controlled holographic plasmonic vortex array for multiple metallic particles manipulation

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